<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			var str="我们喜欢javascript";
			//alert(str.length);
			//str=str.toUpperCase();
			//alert(str);
			//str=str.big();
			//alert(str);
			var w=new Array(4);
			w[0]="Monday";
			w[1]="Thuesday";
			w[2]="Thursday";
			w[30]="月底";
			w.push("Sunday");
			alert("数组的长度是"+w.length);
			var s2=w.join("#");
			alert(s2);
			var s3=w.pop();
			alert("被删除的是"+s3);
			alert("删除后："+w.length);
		</script>
	</head>
	<body>
	</body>
</html>
